Ground-connector.



#tra rrr ii' i www @demarre EREST KLEIN, G11 NEVI YORK, il'.

G3OUNBGONNECTR.

o a?! whom t may com-em:

Be it known that l, Earus'r Kimm., a

citizen et the United States, and aresitlent of the borough otillanhattan. county, eiqg and State of New York, have invented eere tainnew and uset'ul Improvements in Ground-Connectors, set forth in thefollow ing specification.

This invention relates to ground connectors of the type clamped toembrace a pipe or equivalent ground conductor and make a goed electricalconnectiontherewith.

- The objects ot` the invention are to proriiie an ii-iexpensivepractical Connector which shall be indeteriuinably adjustable as to thesize ot pipe 'for which it adapted; one in which eomparativelj.' thinsheet metal may be employed with safety so' iar as seeure clamping' andgoed electrical connecting; are concerned; and one in which the nut ofthe clamping bolt is locke against turn ing.

The above and more detailed features et the invention will be clear fromthe illustrative embodiments described and claimed below in connectionwith the aceonuianying,` drawings, which torni a part of thisapplication, in which like characters refer to corresponding parte, andin which.

Figure 1 is a View cross-Wise of the ground pipe showingthe connectorparti;7 in section, and partly in elevation; Fig. 2 is a top plan oitthe connector; Fig. 3 is a detail #tion through the head; `Fig. 4 is agrl'plan of the head; Fig'. fi showt :t modiiiea- Yion for the free endot the ile'xible band; ind Fig. 6 shows a bottom plan of the sonuiditied band.

A single etampingg` of sheet metal such as hard drawn copper-is stampedat one en .l to torni a suitable wire terminal Lt which-may be. tinned,to facilitate soldering a terminal conductor. The flat body portion 123is centrally perforated to pass the shank ot the bolt or screw Q and isintegri-al with the curved head H which is enlarged laterally toaccommodate theI laterally extending slots 3 and Ll demarking thesheet-1netal gripping bar 5. The slots and l pass' the ilexibleadjustable band (S of thin sheet metal. the end of which first entersslots j and passes out slot l sothat the band t3 overlies the head H andpasses under the bar 5 or in other words is woven through the slots. Themetal facing the bar 5 along the edge of slot 3 may be crimped up. toform the gripping Specification of Letters Patent.

ipplieaticn filed April 28, 1913.

.Patented May 5, 1914i.. serial no, 7539er jaw S and the metal along'the opposite edge of the bar adjacent theslot 4 may be crimped down. totorni the gripping jaw 9. Back over this jaw the end 7' of the band 6 isadapted to bebent into the" kink 1G tlat against the bar 5. The tree endof the band (3 is periorated to pass the shank of the bolt Q and may bedoubled back on itself to form the ledge ll for the engagement of thenut l2 or this free end nia;r be wrapped about the nut l2 as shown inFigs-..5 and G, the

wrappinga 155, 14; and 15 being perforated t0 pass the Shank 2. "lhesewrappings about the nut l2I prevent its turning ei'eu when the band t5is of veriY thin metal and cause the stress troni the bolt- 2 on the nutl2 to be transmitted from the side tace ot' the nut l2 metal band G.which is 1wrapped upon the nut 1Q. aeiubled byy denting l indicates theground conductor to be tgripped. The iground connector normallyasscn'ibled as shown in Fig. l may be applied to the pipe l) byunscrewing' the bolt clasping the band 6 about the pipe; and reengagingthe bolt Q with its nut l2. The end 7 of the band (i should then bedrawn for vard to take up all slaek and then be kinlted back over thebar Any suiplua may then be snipped ott'. l.-rll the slack about thepipe l) mayY be taken up by manually pullingl the bandA ti through 'theslots l and d. so that this hand is adapted to he zgripped in Juririiuleterininate part of its length as distinguished from being"L@gripped in t'ixod spaced as might be iprmed by eut-out steps suchportions` i'u tlu` band :ulapt'ed to be engaged by an inserted part.lllhen the parts are thus embracing the pipe l). the jaw S at the edgeot the slot il is held up against thefband by the pipe l). The grippingaction of this faw 8 tende to malte possible the enr ployu'ient ofthinner metal 'for the hand (i. The bolt then larrewed down to clamp theenum-tor firmlyv to the pipe l). rihe kink t() provides the initialvresistance against; Separation oi the baud t? from the head ll but asthe eoiumct'or tightens the gripping jaws Sand t) bite into the band (Sto reinforce the bold ot the kink 10, the pipe 'forcingthe band t3against the jaw 9 and the jaw S against the band. opposite faces of thebaud thus being,"v gripped. These gripping jaws described may be termedre- The not may be pe lmanently asdown the lips lti and 1T. ground pipeor other Afinemente of: the invention because they merely increase thegripping action between the band and the head H. The relativepositioning of the said parts, with the band 6 Woven through the head asillustrated, alone insures a secure connection.

lVh-at claimed and what is desired to be secured by United StatesLetters Patent isz l. An electrical ground connector consisting of asheet nietal body portion; a coperating flexible thin .metal band and ascrew means for drawing the end of said band toward said body portion toeffect good electrical connection between said parts and a ground pipe;said body portion having foi-ined integrally therewith a terminaladapted to connect with a conductor and an enlarged pipe-engaging headhaving two laterally extending slots forming a central bar to overliesaid band and being of a size to permit the weaving therethrough of saidflexible metal band, said band being suiiicently thin and flexible to bedrawn manually under said bar and over said head to take up all slackabout the ground pipe and be gripped in any indeterminate part of itslength as distinguished from being gripped in liXed spaced steps.

2. An electrical ground connector consisting of a sheet metal bodyportion; a coperating flexible thin metal band and a screw means fordrawing the end of sait band toward said body portion to effect goodelectrical connection between said parts and a ground pipe; said bodyportion having formed integrally therewith a terminal adapted to connectwith a conductor and an enlarged pipe-engaging head having two laterallyextending slots forming a central bar to overlie said band and being ot'a size to permit the weaving therethrough of said flexible metal band,said band being suffi.- ciently thin and flexible to be drawn rnanuallyunder said bar and over said head to take up all slack about the groundpipe and Vbe gripped in any indeterminate part of its length asdistinguished from being gripped in ixed spaced steps, the slot firstentered by said band having the metal. along its edge facing said barformed into an upwardly biting jaw to bite into the under face of saidband.

3. In an electrical ground connector comprising a thin metal band toextend about a ground pipe; and a second part having a bolt hole; a boltadapted to pass throufrh said hole for the purpose of drawing up t efree'end of said band; a nut having the free end of said band Wrappedcompletely about said nut; the wrapping-s of said free end havingperforations alined with but larger than the hole in the nut so that thestress from the pull ot the bolt upon the nut can be transmitted to theband from a full side face oit the nut against the band and so that saidnut is held by the band against turning, for the purpose of improvingthe quality or' both electrical and vmechanical connection between theparts and to permit minimum thinness for the bandD In witness whereof, lhave signed my naine to this specification, in the presence or twosubscribing witnesses.

ERNEST KLEN. `illitnesses:

LEONARD DAY,

L. ALTMAN.

